T58.8X1
⚠ Non-billable (Header)Toxic effect of carbon monoxide from other source, accidental (unintentional)
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for T58.8X1
Child Codes (3)
T58.8X1AToxic effect of carbon monoxide from other source, accidental (unintentional), initial encounterT58.8X1DToxic effect of carbon monoxide from other source, accidental (unintentional), subsequent encounterT58.8X1SToxic effect of carbon monoxide from other source, accidental (unintentional), sequela
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CodeT58.8X1
BillableNo — Header code
ParentT58.8X
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)